Internal combustion engine

Abstract

In an internal combustion engine having at least one exhaust gas turbocharger and an engine crankcase with at least one ventilation unit, by means of which a mixture of gas and lubricant generated in the crankcase of the internal combustion engine can be removed from the engine crankcase, and which cooperates with at least one first separating unit, by means of which lubricant can be separated from the gas and lubricant mixture formed in the crankcase, at least one further separating unit is associated with the at least one exhaust gas turbocharger, by means of which lubricant of a mixture of the lubricant and gas formed in the exhaust gas turbocharger can be separated from the lubricant and gas mixture.

1 . An internal combustion engine ( 10 ) having at least one exhaust gas turbo-charger ( 12 ) and a crankcase ( 26 ) with at least one ventilation unit ( 30 ), by way of which a mixture of gas and lubricant generated in the crankcase ( 26 ) of the internal combustion engine ( 10 ) can be removed from the engine crankcase ( 26 ), and which cooperates with at least a first separating unit ( 32 ) for the separation of lubricant from the gas and lubricant mixture, and
 at least one additional separating unit ( 38 ) associated with the at least one exhaust gas turbocharger ( 12 ), by means of which lubricant of a mixture of the lubricant and gas formed in the exhaust gas turbocharger ( 12 ) can be separated from the lubricant and gas mixture generated in the exhaust gas turbocharger ( 12 ).   
     
     
         2 . The internal combustion engine ( 10 ) according to  claim 1 , wherein a recirculation arrangement ( 36 ) extends from the exhaust gas turbocharger ( 12 ) to the crankcase ( 26 ), by means of which the lubricant of the exhaust gas turbocharger ( 12 ) can be re-circulated into the engine crankcase ( 26 ). 
     
     
         3 . The internal combustion engine ( 10 ) according to  claim 2 , wherein the at least one additional separating unit ( 38 ) is included in the recirculation arrangement ( 36 ) between the exhaust gas turbocharger ( 12 ) and the crankcase ( 26 ). 
     
     
         4 . The internal combustion engine ( 10 ) according to  claim 3 , wherein the at least one additional separating unit ( 38 ) is integrated into the recirculation arrangement ( 36 ). 
     
     
         5 . The internal combustion engine ( 10 ) according to  claim 3 , wherein the at least one additional separating unit ( 38 ) is integrated into a housing of the exhaust gas turbocharger ( 12 ). 
     
     
         6 . The internal combustion engine ( 10 ) according to  claim 3 , wherein the at least one additional separating unit ( 38 ) is integrated into the crankcase ( 26 ).